I have very strange problem with jQuery. I'm using joomla for my site and smf for board. On site i have image sliders based on jquery and on board i have shoutbox. 

When i have board opened in one tab and then i open tab with site shoutbox on forum fails: can't post messages, wont refresh anymore, randomly plays sound of new message.

I would be greatfull for any help :)

This is site link: http://beta.lineage2.com.pl

And board with SB: http://forum.lineage2.com.pl